26042543 has 2 divisors, whose sum is σ = 26042544. Its totient is φ = 26042542.

The previous prime is 26042537. The next prime is 26042579. The reversal of 26042543 is 34524062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26042543 - 2¹⁴ = 26026159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26042593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13021271 + 13021272.

It is an arithmetic number, because the mean of its divisors is an integer number (13021272).

Almost surely, 2^26042543 is an apocalyptic number.

26042543 is a deficient number, since it is larger than the sum of its proper divisors (1).

26042543 is an equidigital number, since it uses as much as digits as its factorization.

26042543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 26042543 is about 5103.1894928564. The cubic root of 26042543 is about 296.4111001627.

The spelling of 26042543 in words is "twenty-six million, forty-two thousand, five hundred forty-three".